States ›Oklahoma ›Texas County ›Guymon

Guymon, OK Tap Water Quality 2026

Water quality report for Guymon, OK — PFAS, lead and copper results, violation history and state inspection findings from EPA SDWIS.

A look at Guymon's drinking water using EPA enforcement records: violations, lead and copper results, PFAS sampling and state inspection findings.

Main Utility: Guymon PWSID: OK2007003 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead was not detected and no violations are open. No PFAS was detected.

C

Guymon earns a C for water quality

Graded on violations, lead, and PFAS, with state inspection findings.

Lead: not detected
PFAS tested, none detected
11 violations since 2015, 1 health-based
No violations currently open
Guymon's lead level vs. all Oklahoma community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: Not detected — 0% of the federal action level
✓ Lower lead than % of Oklahoma utilities
Population Served
12926
~4800 connections
Water Source
Groundwater
Drawn from wells — SDWIS source code GW
Active Violations
0
11 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
0% of EPA action level
Not detected
Action level: 15 ppb
Lead was not detected at the 90th percentile — the result fell below the laboratory detection limit. That is not the same as an absence of lead in every tap, and older homes with lead service lines can still show higher readings.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
Nitrate-Nitrite MCL EXCEEDANCE 11 MG/L — 2025 Resolved
Nitrate-Nitrite MONITORING AND REPORTING — — 2023 Resolved
Nitrate-Nitrite MONITORING AND REPORTING — — 2023 Resolved
Nitrate-Nitrite MONITORING AND REPORTING — — 2023 Resolved
Nitrate-Nitrite MONITORING AND REPORTING — — 2023 Resolved
Nitrate-Nitrite MONITORING AND REPORTING — — 2023 Resolved
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2023–2025 Archived
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2023–2025 Archived
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2023–2025 Archived
Revised Total Coliform Rule MONITORING FAILURE — — 2019 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2019 Resolved
Understanding violation types MCL violations mean a contaminant exceeded the federal maximum limit — the most serious type.
TT (Treatment Technique) violations mean required treatment procedures weren't followed, but don't necessarily mean contamination occurred.

Violation History

11 violations are on record since 2015, of which 1 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Guymon
PWSID OK2007003
Water source Groundwater — Drawn from wells — SDWIS source code GW
Population served 12,926
Service connections 4,800
Systems serving this area 1
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Guymon tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open.
Does Guymon water have PFAS? ▼
It was tested for the six regulated PFAS compounds and none were detected.
Who supplies water to Guymon? ▼
Guymon (PWSID OK2007003). Groundwater. Drawn from wells — SDWIS source code GW
When was this system last inspected? ▼
It was last inspected on 2025-10-30. Inspectors recorded 4 significant deficiencies.

What Should Guymon Residents Do?

1
Read your annual water report
Your supplier publishes a Consumer Confidence Report each July covering the prior year.
2
Check for a lead service line
Lead reaches tap water mainly through service lines and household plumbing. Suppliers now publish an inventory identifying lead lines.
3
Flush before drinking
If water has sat in pipes more than six hours, run the cold tap for two minutes before drinking or cooking.

Nearby Cities in Oklahoma

Hooker, Ok Tap Water Quality 2026 Texas Goodwell, Ok Tap Water Quality 2026 Texas Tyrone, Ok Tap Water Quality 2026 Texas Texhoma, Ok Tap Water Quality 2026 Texas Optima, Ok Tap Water Quality 2026 Texas Hardesty, Ok Tap Water Quality 2026 Texas